(Of an insect pupa or chrysalis) covered in a hard case with the legs and wings attached immovably against the body.T.A. Chapman has shown (1893) that the completely obtect pupa characterises the more highly developed families of Lepidoptera....
The obtect pupa of butterflies is a common example.
Origin
Late 19th century: from Latin obtectus, past participle of obtegere 'cover over'.